212003001 has 20 divisors (see below), whose sum is σ = 361939072. Its totient is φ = 121144248.

The previous prime is 212002991. The next prime is 212003009. The reversal of 212003001 is 100300212.

It is a happy number.

212003001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212003001 - 2⁷ = 212002873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212003009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 186385 + ... + 187518.

Almost surely, 2^212003001 is an apocalyptic number.

212003001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212003001 is a deficient number, since it is larger than the sum of its proper divisors (149936071).

212003001 is an equidigital number, since it uses as much as digits as its factorization.

212003001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373922 (or 373913 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 212003001 is about 14560.3228329594. The cubic root of 212003001 is about 596.2760093080.

Adding to 212003001 its reverse (100300212), we get a palindrome (312303213).

The spelling of 212003001 in words is "two hundred twelve million, three thousand, one".